The Piston,valve, cataloged under National Stock Number 4820-01-433-8329, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Automatic Switch Company Dba Asco. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-433-8329 |
| Primary Part Number | GV262-924-1 |
| Item Name | Piston,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Automatic Switch Company Dba Asco |
| Status | ACTIVE |
| Valve Type for Which Designed | GLOBE |
| Valve Model Number for Which Designed | AV262-865 |
| Valve Size for Which Designed | 1.500 INCHES IN |
| Valve Design Control Activity | 04845 |
| Material | COPPER ALLOY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| GV262-924-1 PRIMARY | Automatic Switch Company Dba Asco (USA) |
| AV262-865-2 | Automatic Switch Company Dba Asco (USA) |
| Reference | Meaning |
|---|---|
| AV262-865 | D/9 Drawing number reference only Automatic Switch Company Dba Asco |
NSN 4820-01-433-8329 is a Piston,valve, manufactured by Automatic Switch Company Dba Asco, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-433-8329 has 2 manufacturer part numbers on file: GV262-924-1 (Automatic Switch Company Dba Asco), AV262-865-2 (Automatic Switch Company Dba Asco).
Key specifications for GV262-924-1: Valve Type for Which Designed: GLOBE; Valve Model Number for Which Designed: AV262-865; Valve Size for Which Designed: 1.500 INCHES IN; Valve Design Control Activity: 04845. 5 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.